Wayland isn’t ready yet. It is looking promising and has a good plan for taking over (i.e. it doesn’t have to be a complete X server replacement, rather can run along/ontop of an X server), but it isn’t ready for any distro to use it over xorg yet.

hm, i have nvidia 430 gt (which i think is not “legacy”), and with the new release of sabayon 8, i have problems in xorg server. The boot procedure is just fine, but when xorg tried to launch, he cant, with error like:: NVRM: RmInitAdapter failed!